Hamburgian State Ensign (Seedienstflagge) 1933 - 1935

image by Klaus-Michael Schneider, 23 May 2011

It is a black over white over red horizontal tricolour. In its centre (or slightly shifted to the hoist) is a black eagle armed and tongued red placed upon a white disc exceeding the white stripe. The canton is a square Hamburg Admiralty Flag pattern.
Source: not yet verified
Klaus-Michael Schneider, 23 May 2011

Model 1933/34 variant

image by Klaus-Michael Schneider, 11 Aug 2011

The ratio is approx 3:5. It is a black over white over dark red horizontal tricolour. Slightly shifted to the hoist a white oval (not a disc) is exceeding onto the other stripes. The oval contains a black eagle armed and tongued dark red. In the canton is a red square with a white bordure. Within the square is the pattern of the Admiralty flag see image of canton below). The biggest surprise is, that it is the nowadays pattern of the castle. There exist two flags in the museum's magazine, described as "new", dated 1934. Today there is no information available from the flag maker in Bonn.
Source: photo taken from filing card no. 1987, 116a+b of Hamburgmuseum
Klaus-Michael Schneider, 11 Aug 2011